Triazinyl vat dyestuffs

ABSTRACT

A-NH-X(-Z)-Y-R     OR A RADICAL -Y-A&#39;&#39;, WHEREIN Y HAS THE ABOVE-MENTIONED SIGNIFICANCE AND A&#39;&#39; REPRESENTS A VATTABLE RESIDUE WHICH ARE VALUABLE DYESTUFFS FOR VAT AND PIGMENT DYEING, THE DYEINGS OBTAINED ARE DISTINGUISHED BY VERY GOOD SHADES, INTERESTING APPLICATION PROPERTIES AND VERY GOOD PROPERTIES OF WET FASTNESS AND FASTNESS TO LIGHT.   -NH-A&#39;&#39;   WHEREIN A DENOTES A VATTABLE RADICAL, X DENOTES A HETEROCYCLIC RADICAL HAVING THREE RING NITROGEN ATOMS WHICH IS BOUNDED TO THE -NH- GROUP BY A RING CARBON ATOM. Y DENOTES AN OXYGEN OR SULPHUR ATOM, R DENOTES AN AROMATIC RADICAL FREE FROM AZO GROUPS WHICH IS BOUNDED TO THE OXYGEN OR SULPHUR ATOM Y BY A CARBON ATOM OF THE AROMATIC NUCLEUS, WHICH, WHEN R REPRESENTS A HETEROCYCLIC AROMATIC RADICAL IS AN AT LEAST 6-MEMBERED HETEROCYCLIC AROMATIC RADICAL, AND Z DENOTES A RADICAL THE INVENTION RELATES TO VAT DYESTUFF OF THE GENERAL FORMULA

United States Patent 3,787,406 TRIAZINYL VAT DYESTUFFS Max Staeuble, Basel, Fritz Kugler, Muttenz, and Max Jost, Oberwil, Basel-Land, Switzerland, assignors to Ciba-Geigy AG, Basel, Switzerland No Drawing. Filed Apr. 16, 1970, Ser. No. 29,255 Claims priority, applicat6i1grg6S/v6vi9tzerland, Apr. 24, 1969,

3 Int. Cl. C07d 55/20 US. Cl. 260-249 5 Claims ABSTRACT OF THE DISCLOSURE The invention relates to vat dyestufi of the general formula z wherein A denotes a vattable radical, X denotes a heterocyclic radical having three ring nitrogen atoms which is bounded to the NH group by a ring carbon atom, Y denotes an oxygen or sulphur atom, R denotes an aromatic radical free from azo groups which is bounded to the oxygen or sulphur atom Y by a carbon atom of the aromatic nucleus, which, when R represents a heterocyclic aromatic radical is an at least 6-membered heterocyclic aromatic radical, and Z denotes a radical or a radical -YA', wherein Y has the above-mentioned significance and A represents a vattable residue which are valuable dyestuffs for vat and pigment dyeing. The dyeings obtained are distinguished by very clear shades, interesting application properties and very good properties of wet fastness and fastness to light.

The present invention provides new vat and pigment dyestuifs of the general formula z (1) wherein A denotes a vattable radical, X denotes a heterocyclic radical having three ring nitrogen atoms which is bound to the NH- group by a ring carbon atom, Y denotes an oxygen or sulphur atom, R denotes an aromatic radical free from azo groups which is bounded to the oxygen or sulphur atom Y by a carbon atom of the aromatic nucleus, in which, when R represents a heterocyclic aromatic radical is an at least G-membered heterocyclic aromatic radical, and Z denotes a radical or a radical Y--A', wherein Y has the abovementioned significance, and A represents a vattable residue.

The following restrictions (a) and (b) however apply:

(a) When Z represents a group NHA', A as well as A and X have the abovementioned general significance, R represents a phenyl radical and Y is an oxygen atom, then R is a phenyl radical which contains substituents which confer solubility in water, or a phenyl radical which is substituted by radicals which in total have a molecular weight of above 138, or a phenyl radical having more than 8 carbon atoms, but the restrictions mentioned do not apply when A represents a methoxyanthraquinone radical or an anthraquinone radical which contains halogen atoms.

(b) When Y represents a sulphur atom, R represents an unsubstituted u-naphthyl radical and Z represents a radical NHA, then A and A must not represent an unsubstituted anthraquinonyl-(Z) radical.

Suitable vattable radicals A and A' are radicals of polycyclic quinones, for example indanthrones, pyranice thrones, and dibenzanthrones, but particularly radicals of phthaloylacridones and especially anthraquinones.

Suitable heterocyclic radicals X are both simple ring compounds and also heterocyclic compounds which contain fused rings. Dyestuffs of Formula 1 in which the radical X represents a 1,3,5-triazine radical are of particular interest.

The aromatic radical R preferably represents a benzene, naphthalene or anthraquinone radical.

The radicals R can be substituted in the aromatic nuclei having regard to the abovementioned restrictive conditions when R represents a phenyl or naphthyl radical. Suitable radicals R however also include heterocyclic aryl radicals or aryl radicals having fused heterocyclic rings, but -R must not contain an azo group.

When Z in Formula 1 denotes a group NHA', the radicals A and A can be identical or different, but pref erably the dyestuifs contain identical radicals A and A, especially anthraquinone radicals. The anthraquinone radicals can be bound to the NH- bridge in the 1- or 2-position. Valuable dyestufis are those which contain the radical of a methoxyanthraquinone, for example of 1-amino-4methoxyanthraquiuone, or the radical of a halogenated anthraquinone, for example 1-amino-2-, 3- or 4-chloroanthraquinone or 2-amino-3- or 4-chloroanthraquinone, especially those of the general formula NH CH; to- O N 1; G0 I Important dyestulfs are also those of Formula 1 which as radicals A and A preferably contain identical unsubstituted anthraquinone radicals, for example dyestuffs of Formula 2, wherein 2 represents a hydrogen atom, having regard to the restrictions mentioned above. Important dyestufls are also those which contain the radical of an acylated anthraquinone, for example l-amino-4- or -5- benzoylaminoanthraquinone, or dyestuffs which contain two identical radicals of the type mentioned, especially dyestufis of the general formula wherein Y and R have the significance indicated for Formula I.

Amongst the groups conferring solubility in water mentioned in the restrictive conditions, hydroxyl groups, but particularly carboxylic acid and sulphonic acid groups, are for example to be understood. As phenyl radicals which are substituted by radicals which in total have a molecular weight of above 138 but contain less than nine carbon atoms, halogenated phenyl radicals, for example the pentachlorophenyl radical, may be mentioned. Amongst phenyl radicals having more than eight carbon atoms, there are to be understood either aliphatically or aromatically substituted phenyl radicals, and also phenyl radicals which contain further fused rings, for example a naphthyl radical or an anthraquinonyl radical. An at least G-membered heterocyclic aromatic radical is to be understood to be a radical which is either a heterocyclic aromatic system, for example a triazine ring (1,3,5) or a heterocyclic radical which contains a fused aromatic radical, for example a couman'n radical. Here again the radical can be substituted.

As examples of the abovementioued dyestufi's which contain two identical unsubstituted anthraquinone radicals or benzoylaminoanthraquinone radicals, and which at the same time come under the r strictions mentioned uni mentioned:

.4 I i 4 der (a), the dyestuifs of the following formulae 'may be NH coon NH-G 0-9 G O 0/ CO N H-C O- N H V )=N N GOrCHaCHgCI-Ig y O Further dyestuffs which must be especially mentioned are those in which A, A and R each represents an anthraquinone radical, for example, the dyestuff of the for- N GO if 0 NH CO CO The manufacture of the dyestuffs of Formula 1 according to the invention can be carried out in known manner by condensation of heterocyclic compounds having three ring nitrogen atoms and containing at least two easily removable substituents, for example methanesulphonyl groups or halogen atoms, with polycyclic quinones which contain groups capable of condensation, for example an amino group, and with aromatic hydroxyl or mercapto compounds. As further substituents, the heterocyclic compounds can for example contain alkyl or aryl radicals, amino groups, for example alkylamino groups, arylamino groups or an H N-group, etherified hydroxyl or mercapto groups, for example alkoxy groups, alkylor aryl-mercapto groups, and nitro, cyano or ClCO- groups. After the manufacture of the dyestuffs of Formula 1, further substituents can be introduced into the radicals A, A and R, or substituents present in these can be removed.

As heterocyclic compounds which are suitable for the manufacture of the dyestufis according to the invention, the following may be mentioned: 3,5,6-trichloro-1,2,4- triazine, 2,4,6-trifluoro-1,3,5-triazine and especially 2,4,6 trichloro-1,3,5-triazine or 2,4,6-tribromo 1,3,5 triazine, 2,4,6-trimethanesulphonyl-1,3,5-triazine, and 4,6-dich1oro- 1,3,5-triazines which are substituted in the 2-position by an aryl or alkyl radical, for example a phenyl, methyl or ethyl radical, or by the radical of an aliphatic or aromatic mercapto compound bound through the sulphur atom or a hydroxyl compound bound through the oxygen atom, or especially by an amino group or by the radical of an aliphatic, heterocyclic or aromatic amino compound bound through the nitrogen atom.

As hydroxyl or mercapto compounds which are suitable for the manufacture of the dyestuffs of Formula 1, the following may be mentioned:

Z-hydroxynaphthalene,

pentachlorothiophenol,

1-hydroxy-4-phenylbenzene,

1-hydroxy-3-methyl-6-isopropylbenzene,

1,2-dihydroxy-4-( l,1-dimethylethyl)-benzene,

1-hydroxy-2-methyl-4,6-dichlorobenzene,

1-hydroxy-4-nitrobenzene, 1-hydroxy-2-chloro- 4,=6-dinitrobenzene,

1-hydroxy-2,4,6-trichlorobenzene,

1-hydroxy-4-methoxybenzene,

0-, mand p-cresol,

xylenols,

oand p-chlorophenol,

salicylic acid,

1-hydroxybenzene-4-carboxylic acid,

2-hydroxynaphthalene-3-carboxylic acid,

l-hydroxybenzene-4-sulphonic acid,

1-hydroxy-2-chlorobenzene-4-sulphonic acid,

2-phenylethy1alcohol,

pentachlorophenol,

l-hydroxy-Z-phenylbenzene,

1-hydroxy-3-(4-methylphenylamino)benzene,

1-hydroxy-4-carbopropoxybenzene, 4-hydroxycoumarin, S-hydroxyquinoline, Z-hydroxyanthraquinone, 2-mereaptoanthraqninone, 2-mercaptonaphthalene, 1-hydroxy-4-(4-methylphenylsulphonamido)- anthraquinone, 1-hydroxy-2-isopropy1-4-chloro-5-methylbenzene, 1-hydroxy-2-chloro-4-phenylbenzene, 1-mercapto-2-carboxybenzene, l-hydroxy-Z,3,5-trimethylbenzene, hydroxybenzene, 1-hydroxy-4- (anthraquinonyl( 1 )-aminocarbonyl) benzene,

and also polyfunctional hydroxyl or mercapto compounds having at least two hydroxyl groups which can undergo condensation, cyclic compounds having a glucoside linkage, but especially aromatic or heterocyclic compounds which contain at least two hydroxyl groups having mobile hydrogen atoms, for example dihydroxybenzenes and Ho-O-O-on dihydroxydiphenylpropane HOOC OOH pheuolphthaleln 0H HOQQOH ellagic acid,

H OE

1,3- 1% and 1,5-dihydroxynaphthalene, 2,6-dihydroxytoluene, dior tri-hydroxyor mercapto-heterocyclics, for example 2-phenyl-4,6-dihydroxytriazine, 2,4,6-trihydroxy- 8 pyrimidine, 2,4,6-trihydroxytrian'ne, 3,6-dihydroxypyridazine, 1,4-dihydroxyphthalazine, 1,3-dihydroxyquinazoline, 2,3 dihydroxyquinoxaline, 2,5 dimercapto 1,3,4-thiadiazole, 3,6 dihydroxy 1,2,4-t1imethylbenzene, 4-methy1- uracil, di-{i-naphthol, tetrahydroxy-diphenyl, and trihydroxybenzoic acid.

Instead of a dihydroxy or dimercapto compound those compounds which contain both a hydroxyl and a mercapto group may also be used, for example 2-mercapto-4- hydroxypyrimidine, Z-thiouracil or 4-methylthiouracil.

Amongst the polycyclic quinones, those which can be vatted are particularly important. In order to manufacture the dyestufis according to the invention, quinones which contain substituents capable of condensatiom for example primary or secondary amino groups, maybe reacted in known manner with the abovementioned compounds which contain easily removable substituents, for example halogen atoms. The term vattable quinone comprises those chromophores which may be converted by reduction into a so-called leuco-form or vat which has a better aflinity for natural or regenerated cellulose fibres than the nonreduced form, and which can be re-converted by oxidation into the original chromophoric system. Thus no polycyclic quinones of the type of 1-amino-4-arylaminoanthraquinone-Z-sulphonic acid are used in the present process, because although these can be reduced they are so strongly modified chemically by the reduction that they can no longer be converted into the original chromophoric system. As examples of vattable compounds the following may be mentioned: naphthalenetetracarboxylic acid imides, polycyclic quinones, for example perylenetetracarboxylic acid imides, especially the phenylimides, anthrapyrimidines, anthrapyridones, isothiazoleanthrones, quinazolineanthraquinones, oxazoleanthraquinones, thiazolanthraquinones, oxdiazoleanthraquinones, anthraquinonyltriazoles, pyrazoleanthraquinones, dipyrazoleanthronyls, pyrazinoanthraqninones, azabenzanthrones, indanthrones, thioxanthonanthraquinones, anthrimides, anthrimidecarbazoles, dihydroacridines, anthanthrones, pyranthrones, dibenzpyrenequinones, dibenzanthrones, isodibenzanthrones, flavanthrones, acedianthrones and especially anthraquinoneacridones and the anthraquinones themselves, whereby there are to be understood not only derivatives having pure 9,l0-dioxoanthracene rings, but also those having thiophanthrone radicals and the like, as well as anthraquinone compounds having 9,10-dioxoanthracene rings which can contain the customary substituents, for example halogen atoms, alkoxy groups, alkyl groups, sulphonic acid amide groups, sulphone groups and acylamino groups and if desired further fused and condensed-on carbocyclic and heterocyclic rings. .As examples of suitable quinones which contain amino groups which can be condensed, the following may bementioned:

l-amino-'Z-chloroanthraquinone, 1-amino-3-chloroanthraquinine, Z-amino-3-chloroanthraquinone, 1-amino-5-chloroanthraquinone, 2-amino-4-chloroanthraquinone, 1-amino-4-chloroanthraquinone, 1-amino-6-chloroanthraquinone, 1-amino-8-chloroanthraquinone, 1-amino-3-chloro-6-methylanthraquinone,

- l-amino-6,7-dichloroanthraquirione,

l-amino-4-benzoylaminoanthraquinone, 1-amino-4-methoxyanthraquinone, 2-amino-3,4-phthaloylacridones,

1,4-diamino-2-acetylaminoanthraquinone, aminoanthrapyrimidines, 1-aroylamino-4- or -5-aminoanthraquinone, 1,4-diamino-2-acetylanthraquinone, 1-amino-7-chloroanthraquinone, 1-amino-Z-methyl-3-chloroanthraquinone, 4-aminoanthraquinone-2,1 (N) -acridones,

for example 8',8"-diamino-1',1,4,1"-trianthrimidecarbazole, as well as perylene tetracarboxylic acid di(por maminophenyl)-amide and naphthalene tetracarboxylic acid diimides, as well as compounds of the formulae (N) NE: N (I? NH, (X=O 01 S) and those of the formula n=1 of 2, one of the symbols R R and R represents a halogen atom, an alkoxy, aryloxy, arylmercapto or acylamino group, especially a benzoylamino group, for example a ch1oro-, methyl-, sulphonor fluoroben zoylamino groups or an unsubstituted C H CO,group, and each of the other symbols R R and R represents a hydrogen or halogen atom, one of the pairs of symbols 10 R R R 12 or R R together being able to represent a grouping of the formula Na N R denoting an arylene radical preferably of the benzene series, and the compound of the formula NH: 0 HzN CO CO I? I ii-s CO CO wherein R can be a benzoyl group or a hydrogen atom.

The reaction of the heterocyclic compounds with the hydroxyl or mercapto compounds and the polycyclic quinones can take place in any desired sequence.

Thus, for example, the hydroxyl or mercapto compound can first be reacted with the reactive heterocyclic compound and the resulting product subsequently reacted with the vattable compound. The heterocyclic compound may also be first reacted with the vattable compound and the reaction product subsequently condensed with the hydroxyl or mercapto compound. Advantageously, however, the reaction with the hydroxyl or mercapto compound of the radical R takes place last. The condensation with the vattable quinone is advantageously carried out under warm conditions.

The condensation reactions may be advantageously carried out in an inert solvent if desired in the presence of an acid-binding agent, for example sodium carbonate, sodium acetate, dimethylformamide or, advantageously, a tertiary amine, preferably pyridine.

Depending on the type and sequence of the reactions, suitable media are aqueous systems (for example water/ acetone) or organic solvents, for example nitrobenzene, dichlorobenzenes or trichlorobenzenes, dimethylaniline, N-methylpyrrolidone, pyridine and the like, or phenol.

When 2,4,6-trichloro-1,3,5-triazine is used as the heterocyclic compound, the process is advantageously carried out in a high-boiling solvent, for example nitrobenzene, dichlorobenzene, naphthalene or phenol, since the third substituent in the triazine radical is occasionally difiicult to replace. Reaction temperatures of above are advantageously chosen. The replacement of the third substitutent in the triazine ring can also be facilitated by the addition of small amounts of an aromatic sulphonic acid, for example, benzene sulphonic, p-toluene sulphonic or especially rn-nitrobenzene sulphonic acid.

The dyestuffs according to the invention can also be manufactured by choosing as starting substances the corresponding halogen compounds instead of chromophores containing amino groups (for example chloroanthraquinone instead of aminoanthraquinone) and reacting these with aminotriazines before or after the condensation with the hydroxyl or mercapto compounds. The manufacture can also take place by reacting triazines which contain removable substituents, for example halogenotriazines, with hydroxyl or mercapto compound in a molar ratio of 1:1 and, after subsequent replacement of two removable substituents of the triazine by amino groups, condensing with vattable polycyclic aromatic compounds which contain removable substituents, for example halogenoanthraquinones. Valuable mixed shades can be obtained by combining two different vattable compounds. When the vattable compound carries at least two amino groups and the reaction is carried out with a heterocyclic compound which also contains at least two substituents capable of condensation, dimeric or polymeric dyestufis can also be obtained.

It can be advantageous to pass a stream of air or nitrogen through the reaction mixture periodically or during the whole reaction. The dyestuffs according to the invention can also contain sulphonic acid groups. Products which have a better aflinity for the fibre are occasionally obtained when dyestufl s free from sulphonic acid groups are subsequently sulphonated according to one of the customary processes.

The dyeings obtained with the dyestuifs according to the invention are distinguished by vivd clear shades. Their advantageous application properties should be particularly mentioned. According to the present process, dyestufis are obtained inter alia of which the application thereof is largely independent of temperature. The application can be efiected according to the most diverse processes, for example according to the exhaustion process or the pad dyeing process, for example the pad-jig process, the pad-steam process or the cold dwell process. It is equally noteworthy that in all application processes good dyestufi yields are obtained and that a large proportion of the dyestuffs can be synthesized in almost theoretical yield according to the process of the invention. A particular advantage is that the range of the color shades obtainable is very great so that practically all shades can be produced with the dyestuifs according to the invention.

The products obtained in accordance with the process are suitable for dyeing and printing the most diverse materials, especially for dyeing and printing fibres of natural and regenerated cellulose in the presence of reducing agents, for example dithionite. The resulting dyeings are distinguished by very good properties of Wet fastness, especially fastness to boiling with sodium carbonate and fastness to chlorine, as well as by good to very good fastness to light.

The new dyestuffs can also be used as pigments. As a result of their advantageous properties they can be employed for the most diverse pigment applications, for example in a finely divided form for dyeing rayon and viscose or cellulose ethers or esters or polyamides or polyurethanes or polyesters in the spinning composition and also for the manufacture of colored lacquers or lacquer-forming agents, solution or products of acetylcellulose, nitrocellulose, natural resins or synthetic resins, for example polymerization resins or condensation resins, for example aminoplasts, alkyd resins, phenoplasts, polyolefines,for example polyethylene, polypropylene, polystyrene, polyvinyl chloride, polyacrylonitrile, rubber, casein, silicone and silicone resins. They can also be advantageously employed in the manufacture of crayons, cosmetic preparations or laminated sheets.

In the examples which follow the parts, denote parts by weight and the percentages denote percentages by weight unless otherwise stated. The symbol Cy denotes a radical of the formula EXAMPLE 1 6.3 parts of the reaction product of 1 mol of cyanuryl chloride and 2 mols of l-amino-3-chloro-anthraquinone dyes cotton or viscose rayon or viscose staple fibre in, accordance with the customary vat dyeing processes greenish-tinged yellow shades.

Analytical results.-Calculated (percent): C, 67.04; H, 2.88; Cl, 9.65. Found (percent): C, 67.1; H, 2.9; Cl, 9.8.

When instead of l amino 3 chloro-anthraquinone, 2 aminoacedianthrone, 4- or 5 amino-1,1'-dianthrimidecarbazole or 4 aminoanthraquinone 2,1(N)-acridone is used, dyestufis having similar properties are obtained.

EXAMPLE 2 6.3 parts of the reaction product of 1 mol of cyanuryl chloride and 2 mols of 1-amino-3 chloro-anthroquinone are reacted in parts of nitrobenzene together with 2.9 parts of pentachlorothiophenol in the presence of 0.2 part of pyridine as in Example 1.

The mixture is kept for 1 hour at the boil and is subsequently allowed to cool to room temperature and stirred for a further 2 hours. The product of the formula NH ac which precipitates is filtered, Washed with nitrobenzene and methanol and dried in vacuo. It dyes cotton accord ing to conventional vat dyeing processes greenish yellow shades.

Further, dyestuffs may be obtained as described in Ex ample 1 by reacting the components listed in the following table.

TABLEC0ntinued Reactive component Hydroxy or mercapto component Color shade (on cotton) 12 Same as Example 7 EH Yellow.

HC o=$ 14 .do. 110 Do.

14 (In (I!) DO.

I5 do if D0.

16-...- Golden orange.

NH {331-01 0 NH 17"... Same as above Do.

18 fin D0.

Same as above Red.

TABLE*Continued Reactive component Hydroxy or mercapto component Color shade (on cotton) 20 Same as Example 19 Cl 01 Red.

21 an CH; Red;

22 an E0 Red:

23 fln (I) 011 Red;

4) NHS orO-cm 24..." Blue;

NH O NH r-C1 0 NH o NH I 26 0 CH; CH: Greenish-tlnged yellow;

I OH 01 NH r-C1 0 NE @0! 26....- Same as above- Cl Do;

TABLEContinued Reactive component Hydroxy or mercapto component Color shade (on cotton) 33...;Same as Example 31 Cl Green-tinged yellow.

'44 fln 0 CH; Do.-

35..... O C O CH; Yellow.-

I O NH (By-Cl (l) NH 36.:.... Same as above Do.-

HO-O-C 0 OH 37 M 01 Do.

38 (In D0:

39..." CH: Golden orange;

0 ONE (6 HO- c1 fy-Ol (I) NH 0 ONE 40"... Same as above ('31 ('31 D0:

41 n 01 01 Do:

42 fin C1 D0;

TAB LE-Continued em; Hydroxy or mercapto component Color shade (on cotton) 60..-.. Sameas Example 59 1'31 Blue.

HS Cl 6! fin C1 D0.

62 M (ii Do.

64. O NH Gre -blue.-

NH ("Jr-431 O NH 88---- L? NH, Same as above Do.

mac cm (iJy-Cl ('3' NH wt 0 OH:

66. n-mn- DO.

0 NH; N

NH (Dy-Cl 29 EXAMPLE 3 5.6 parts of the reaction product of 1 mol of cyanuryl chloride and 2 mols of l-aminoanthraquinone in 160 parts of nitrobenzene together with 1.4 parts of 4-hydroxybenzoic acid are reacted in the presence of 0.3 part of pyridine as in Example 1. After completion of the reaction the mixture is allowed to cool to 90 C., 2 parts of thionyl chloride are added and the whole is kept for 2 hours at this temperature. Thereafter excess thionyl chloride is removed by evaporation in vacuo and 2.3 parts of l-aminoanthraquinone are added. The reaction mixture is stirred for 2 hours at 125-130 C. and subsequently for a further 1 hour at 155-160 C. It is then allowed to cool to about 100 C., filtered whilst still hot and the product isolated in the customary manner.

The resulting dyestufi of the formula ll 0 NH b -0000413 o N ll dyes cotton yellow shades having good fastness properties.

EXAMPLE 4 6.2 parts of the compound of the formula in 80 parts of nitrobenzene are heated to the boil with the addition of 1.5 parts of Z-naphthol and 0.3 part of pyridine, a slow stream of nitrogen being passed through until no further hydrochloric acid is evolved. The mixture is left to cool to about 80 C., filtered, theproduct washed with nitrobenzene, subsequently with methanol and then dried in vacuo at about 80 C. Y The resulting dyestufi of the formula SN l H o IIIH E 0 NH 30 dyes polyvinyl chloride yellow shades having excellent fastness to migration.

When instead of Z-naphthol equivalent parts of 2-hydroxyanthraquinone are used, a yellow dyestuif having similar by good properties is obtained.

EXAMPLE 5 are obtained. It crystallizes from o-dichlorobenzene in large yellow plates.

37.1 parts of this product, 39.0 parts of 1-(2'-hydroxynaphthoyl-3)-aminobenzoyl-4-benzoylaminobenzene, 600 parts of nitro'benzene and 47 parts of diethylanil ne are stirred for 17 hours at -125 C. The product is worked-up in the manner described above. 61.7 parts (86% of theory) of a reaction product of the formula EH NEW are obtained.

36 parts of the above product, 17 parts of Z-amino- 3,4-phthaloylacridone and 300 parts of phenol are stirred for 3 hours at C. The melt, cooled to 90 C., is mixed with 300 parts of pyridine. After cooling to room temperature, the dyestuif which has precipitated is filtered, washed with pyridine and methanol and dried. It corresponds to the formula COQ N N O: *0 0: O

BONE-COG and dyes cotton from a claret-colored vat olive green shades.

' 3'1 EXAMPLE 6 The product of the formula N NH-O/ ool 4.2 parts of this product are stirred for 3 hours at 150 C. with 1.4 parts of l-aminoanthraquinone and 30 parts of phenol. The dyestuif which has been separated according to the method of Example 5 dyes cotton from a claret-colored vat covered orange-colored shades and corresponds to the formula Dyeing instruction 1 part of dyestufi is vatted with 10 parts by volume of sodium hydroxide solution of 36 Be. and 5 parts of sodium hydrosulphite in 200 parts of water at 50 to 70 C. The above stock vat is added to a dyebath which contains 5 parts by volume of sodium hydroxide solution of 36 Be. and 3.7 parts of sodium hydrosulphite in 2000 parts of water. parts of cotton are introduced at 40 C. After 10 minutes 15 parts of sodium chloride are added, a further 15 parts are added after 20 minutes, and dyeing is carried out at 40 C. for 45 minutes. The cotton is then squeezed out, oxidized and finished in the customary manner.

Pigment dyeing 5 parts of the dyestulf described in Example 2 are mixed with 95 parts of dioctyl phthalate and ground in a ball mill until the dyestufi particles are smaller than 3 0.8 part of this dioctyl phthalate paste is mixed with 13 parts of polyvinyl chloride, 7 parts of dioctyl phthalate and 0.1 part of cadmium stearate. The mixture is then milled for 5 minutes on a two-roll mill at C.

A material dyed greenish-tinged yellow, having good fastness to migration and good fastness to light, is obtained.

When instead of the dyestufi mentioned above, the dyestufi' of Example 9 is used and in other respects the same procedure is followed, a material dyed greenish-yellow shades having good fastness to migration and good light fastness is obtained.

When instead of the abovementioned dyestufi the reaction products of Example 1, Table Examples 1, 40, 41 or 45 are used and in other respects the same procedure is followed, materials having similar by good fastness to migration and light are obtained.

Lacquer dyeing 40 parts of a nitrocellulose lacquer, 2.375 parts of titanium dioxide and 0.125 part of dyestuff No. 39 are ground for 16 hours in a rod mill. The resulting lacquer is spread in a thin layer on an aluminium foil. It gives an orange coloration of excellent fastness to light.

Orange or red lacquers having similar by good light fastness properties are obtained when using the dyestuffs according to Table Examples 41 or 55.

What is claimed is:

1. A vat dycstuff of the formula CO I in which Y is 0 or -S-- and R is diphenyl and diphenyl substituted by chlorine, phenyl and phenyl substituted by lower alkyl, hydroxyl, chloro, phenyl-substituted lower alkyl, lower alkylated phenylamino, nitro, methoxy, carboxyl, sulphonic acid, lower alkoxycarbonyl, and anthraquinoneaminocarbonyl,

naphthyl and naphthyl substituted by phenylcarbonylamino, phenylcarbonylaminophenylaminocar-bonyl, and carboxyl,

benzopyronyl,

quinolinyl,

33 34 anthraquinonyl, anthraquinonyl substituted by lower 4. The vat dyestutf of-the formula alkyl sulphonamido, or benzanthronyl. 2. A vat dyestufi of the formula con; co

\CO \OO 00 NH C0 CH2 wherein Y is or and R is 5. A vat dyestuff of the formula diphenyl and diphenyl substituted by chlorine,

phenyl substituted by lower alkyl, hydroxyl, chloro,

phenyl-substituted lower alkyl, lower alkylated phenylamino, nitro, methoxy, lower alkoxycarbonyl, and anthraquinoneaminocarbonyl,

naphthyl substituted by phenylcarbonylamino, phenylcarbonylaminophenylaminocarbonyl, and carboxyl,

benzopyronyl,

E quinolinyl, Y anthraquinonyl, anthraquinonyl substituted by lower alkyl sulphonamido, or NH benzanthronyl. 3. The vat dyestufi of the formula O O CH:

wherein Y is an oxygen or a sulphur atom.

) i 01 References Cited UNITED STATES PATENTS 2,716,645 8/1955 Von 260-249 (30 3,164,593 1/1965 Moergeli 260-249 3,349,089 10/1967 Kazankov et a1. 260249 JOHN M. FORD, Primary Examiner CO C US. 01. X.R. 

